{"common":{"save":0,"post_id":"5804","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8467","post_id":"5804","mon_id":"1158532","chapter_id":"1158660","question":"<p>N\u1ed1i các ý \u1edf c\u1ed9t A v\u1edbi các bi\u1ec3u th\u1ee9c \u0111\u1ea1i s\u1ed1 \u1edf c\u1ed9t B mà chúng bi\u1ec3u th\u1ecb<\/p>","options":[["1) Tích c\u1ee7a a và 6","2) Th\u01b0\u01a1ng c\u1ee7a a và 6","3) T\u1ed5ng c\u1ee7a a bình ph\u01b0\u01a1ng và 6"],["a² + 6","6a","<span class=\"math-tex\">$\\dfrac{a}{6}$<\/span>"],["6a","<span class=\"math-tex\">$\\dfrac{a}{6}$<\/span>","a² + 6"]],"correct":[2,0,1],"level":"2","hint":"","answer":"<p>Các bi\u1ec3u th\u1ee9c \u0111\u1ea1i s\u1ed1 bi\u1ec3u th\u1ecb <\/p><p> 1) Tích c\u1ee7a a và 6 là 6a<\/p><p> 2) Th\u01b0\u01a1ng c\u1ee7a a và 6 là <span class=\"math-tex\">$\\dfrac{a}{6}$<\/span><\/p><p> 3) T\u1ed5ng c\u1ee7a a bình ph\u01b0\u01a1ng và 6 là a² + 6<\/p><p>\u0110áp án \u0111úng c\u1ea7n n\u1ed1i là<\/p><p><span style=\"color:#16a085;\"> 1) Tích c\u1ee7a a và 6 — 6a<\/span><\/p><p><span style=\"color:#16a085;\"> 2) Th\u01b0\u01a1ng c\u1ee7a a và 6 — <span class=\"math-tex\">$\\dfrac{a}{6}$<\/span><\/span><\/p><p><span style=\"color:#16a085;\"> 3) T\u1ed5ng c\u1ee7a a bình ph\u01b0\u01a1ng và 6 — a² + 6<\/span><\/p>","type":"matching","extra_type":"mat_txt","time":"0","user_id":"131","test":"1","date":"2022-05-31 03:27:27"},{"id":"8469","post_id":"5804","mon_id":"1158532","chapter_id":"1158660","question":"<p>Nh\u1eefng bi\u1ec3u th\u1ee9c \u0111\u1ea1i s\u1ed1 nào sau \u0111ây b\u1eb1ng v\u1edbi bi\u1ec3u th\u1ee9c 3a² + 9 ?<\/p>","options":["<strong>A.<\/strong> 3 + 9a²","<strong>B.<\/strong> 3a + 9","<strong>C.<\/strong> 9 + 3a²","<strong>D.<\/strong> 3(a² + 3)"],"correct":"[\"3\",\"4\"]","level":"2","hint":"<p>Áp d\u1ee5ng các tính ch\u1ea5t giao hoán, tính ch\u1ea5t phân ph\u1ed1i<\/p>","answer":"<p><strong>A.<\/strong> 3 + 9a² (sai)<\/p><p><strong>B.<\/strong> 3a + 9 (sai)<\/p><p><strong>C.<\/strong> 9 + 3a² (\u0111úng, vì phép c\u1ed9ng có tính giao hoán, 3a² + 9 = 9 + 3a²)<\/p><p><strong>D.<\/strong> 3(a² + 3) (\u0111úng, vì phép nhân có tính ch\u1ea5t phân ph\u1ed1i v\u1edbi phép c\u1ed9ng, 3(a² + 3) = 3a² + 3.3 = 3a² + 9)<\/p><p>Các \u0111áp án \u0111úng là <span style=\"color:#16a085;\"><strong>C.<\/strong> 9 + 3a² và <strong>D.<\/strong> 3(a² + 3)<\/span><\/p>","type":"checkbox","extra_type":"classic-checkbox","time":"0","user_id":"131","test":"1","date":"2022-05-31 03:37:23","option_type":"txt","len":2},{"id":"8472","post_id":"5804","mon_id":"1158532","chapter_id":"1158660","question":"<p>Vi\u1ebft bi\u1ec3u th\u1ee9c \u0111\u1ea1i s\u1ed1 bi\u1ec3u th\u1ecb quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c (\u0111\u01a1n v\u1ecb: m) sau x phút c\u1ee7a m\u1ed9t xe \u0111\u1ea1p có v\u1eadn t\u1ed1c 3m\/s<\/p>","options":["<strong>A. <\/strong>180x (m)","<strong>B. <\/strong>18x (m)","<strong>C. <\/strong>3x (m)","<strong>D. <\/strong>30x (m)"],"correct":"1","level":"2","hint":"<p>1 phút = 60 giây<\/p><p>Quãng \u0111\u01b0\u1eddng = V\u1eadn t\u1ed1c . Th\u1eddi gian<\/p>","answer":"<p>\u0110\u1ed5i x phút = 60x giây<\/p><p>Quãng \u0111\u01b0\u1eddng xe \u0111\u1ea1p có v\u1eadn t\u1ed1c 3m\/s \u0111i \u0111\u01b0\u1ee3c sau 60x giây là<\/p><p>3 . 60x = 180x (m)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"> <strong>A. <\/strong>180x (m)<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-31 03:44:46","option_type":"txt","len":1}]}